Seiko Cal. 5231 - 231

The 5231-231 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5231 caliber with 31j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-b1581623d98c]

Also known as: Sumo, World Timer

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Cream

Jewels

31j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1973

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